I can take a video/audio recording when it warms up next. It's to the extent that if i sit my arm out the window on a cool night it'll warm my arm from the air through the wheel arch.

EightyWayNeeds to get out more

Joined: Jul 17, 2014
Posts: 120
Location: Ireland

Posted:
Mon Jan 05, 2015 8:33 pm

Perhaps the right thread - my ace 16v doesn't seem to have have the afterrun fan speed (fan does not stay on when the engine is hot). I leave the ignition on and wait to keep the fan on. Am I missing a 214 relay or something?

EightyWayNeeds to get out more

Joined: Jul 17, 2014
Posts: 120
Location: Ireland

Posted:
Mon Jan 05, 2015 8:37 pm

...and the attachment

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Mikes2Site Moderator

Joined: Jan 31, 2003
Posts: 9132
Location: Polmont

Posted:
Tue Jan 06, 2015 1:51 pm

Looks like you might be missing #2. do you have a picture of the lid ?

@ Mike2 Yes, the post ignition afterrun is not working. I was thinking it could be a 214 relay in position 2 above the jumper - but I am just guessing!

@Hoolio does your fans continue after you switch off your ignition (with a hot engine)?

Here is my fusebox cover:

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Mikes2Site Moderator

Joined: Jan 31, 2003
Posts: 9132
Location: Polmont

Posted:
Tue Jan 06, 2015 8:08 pm

relay 272 (the black one) in position 3 is what controls the after run.

you can usually test the system by joining the 2 wires for the afterrun sender together. If it starts running, change the sender. if it doesn't, there's another fault - usually that relay, fan motor, resistor or the wiring.

You also have to remember, it only operates above a certain temperature so it doesn't run every time you switch off

Thanks, I have never heard it run after my ignition is turned off, no matter how long hard and hot it has been. Strangely it does work if I turn the ignition on - I do this after a long drive. At least I know now it is the 272 relay I may swap it out with a spare from a mate and take it from there. Cheers

hoolioGot Nothing Better To Do

Joined: Sep 22, 2006
Posts: 1029
Location: surrey

Posted:
Wed Jan 07, 2015 4:42 pm

I'm sure it works fine but to be honest it isn't something that Ive noticed,reckon it'd have to get a serious ragging on a real scorching day for it to kick in.

The only reason I thought it should be running was that if I turned on my ignition lights with a hot engine then the fans would kick in. That said my car warms to 87 degrees and stays there, it never goes any higher. My thermostat is 87 degrees too. Probably best not overthinking this.

EightyWayNeeds to get out more

Joined: Jul 17, 2014
Posts: 120
Location: Ireland

Posted:
Tue Jun 21, 2016 7:56 am

...to follow up on this my radiator fan speed is now locked on speed #3. It's loud but effective. It turns on immediately as the ignition is turned on. I am suspecting the sender on the rad. I haven't got any code errors for it. Is it worth replacing the sender on the rad (3 pin by the drain plug)?

Matt-MattCamped on the site

Joined: May 10, 2013
Posts: 228

Posted:
Wed Jun 22, 2016 10:30 am

EightyWay wrote:

...to follow up on this my radiator fan speed is now locked on speed #3. It's loud but effective. It turns on immediately as the ignition is turned on. I am suspecting the sender on the rad. I haven't got any code errors for it. Is it worth replacing the sender on the rad (3 pin by the drain plug)?

Yes it's worth replacing as it may be that, they're not too expensive. Mine was $38 here in Australia so it's likely a lot cheaper there. Mine was covered in coolant sludge..

It's a radiator out job, or if you cut off the end of a deep socket it can be done without taking it out. It however will be a coolant drain job.

You can test it if I recall correctly, assuming it's the same as my Audi 80 V6 (ABC) was. One of the pins is the ground, the other two are the speed 1 and speed 2 signals if it's a three pin that is.

Unfortunately I don't remember much more, as I don't have the car anymore as someone hit me.

EightyWayNeeds to get out more

Joined: Jul 17, 2014
Posts: 120
Location: Ireland

Posted:
Wed Jun 22, 2016 11:33 am

Access is pretty good, so no need to remove the rad. I have the Ace 16v engine.
About €17 in these parts. My coolant hoses need to be replaced anyway (recent steam action on the motorway. Crumbling top hose. Thankfully not the head.

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EightyWayNeeds to get out more

Joined: Jul 17, 2014
Posts: 120
Location: Ireland

Posted:
Fri Jul 01, 2016 4:12 pm

Sorry about your accident Matt. Am I right that the afterrun sender is actually run by the while 2 pin sensor at the back of the block? I actually think both sensors are acting up. I do a bit of diagnosis on it by connecting those 2 wires together (ignition off?)

EightyWayNeeds to get out more

Joined: Jul 17, 2014
Posts: 120
Location: Ireland

Posted:
Sun Jul 03, 2016 1:15 pm

That worked out well. I had a 29mm deep socket for the topside sensor which fit over the rad sensor too. I worked quick as not to loose too much coolant. The replacement part was a Febi 1528 Radiator Fan Switch. Caught the spillage in a tray and recycled it (fairly recent fluid). And then...nothing! no more noise. Later on the car was up to temp and the fans started spinning at low speed. No need to bleed the air this time, Perfect.

The radiator fan afterrun is still a potential issue. That sensor at the back of the block is hard to get to!

vmx1200Newbie

Joined: Feb 22, 2009
Posts: 4

Posted:
Sat Jun 24, 2017 5:45 pm

Hi all as this thread is not too old I wonder if anyone could help me?
I have a 92 2.0 cabriolet with an ABK engine, As soon as the battery is connected the cooling fans start running at what i think is speed 1, if fuse 20 is removed the fan stops. I have removed radiator fan relay(214) from position 2 and tested it and it seems OK.
Having read this thread it appears the radiator fan delay relay (272) controls the afterrun which is presumably what is happening even though the engine is stone cold????
I will get a new relay to exclude it but someone mentioned a sensor, any idea where this is? There is a sensor (2 wire) on a bracket attached to the head ....not sure if this is it but disconnecting it does nothing

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